Device for applying adhesive to cardboard sheets.



E. JAGENBERG.

DEVICE FOR APPLYING ADHESIVE T0 CARDBOARD SHEETS.

APPLICATION HLED AUG.25| 1914.

2 SHEETS-SHEET] v Zi- Patented Aug. 31, 1915.

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E JAGENBERG.

DEVICE FOR APPLYING ADHESIVE T0 CARDBOARD SHEETS.

APPLICAHON FILED AUG.25. I914.

1,151,596. Patented Aug. 31, 1915.

2 SHEETS-SHEET 2- a MW l 1; I if? Q 1 EMIL JAGENBERG, DUSSELIDORF, GERMANY.

DEVICE FOR APIPLYING ADHESIVE 'I'O CARDBOARD SHEETS.

Specification of Letters Patent.

Patented Aug. 31, 1915.

Application filed August 25, 1914. Serial No. 858,424.

To all-whom it may concern Be it known that I, EMIL JAGENBERG, a subject of the German Emperor, and a resident of 107 Himmelgeisterstrasse, Dusseldorf, Germany, manufacturer, have invented certain new and useful Improvements in Devices for Applying Adhesive to Cardboard Sheets, of which the following is a statement.

The known arrangements for applying adhesives to cardboard sheets show the disadvantage, that the applying plate will also be lowered when there is no sheet of cardboard beneath it, for instance, when the mechanism for pulling the sheet from the pile has failed. The consequence will be that the plate, on which the cardboard sheets are advanced, is soiled with adhesive.

The present invention relates to an arrangement which will remove this disadvantage. This is obtained by a feeler situated in the path of the cardboard sheet being operated by the latter, when it has reached its position beneath the gunnning plate, in such a manner, that the said feeler will disengage a device locking the gumming plate.

In the accompanying drawing Figure 1 is a longitudinal section on the line A-B, and Fig. 2 is a cross section on the line C-l) through the arrangement.

The cardboard sheets which are pulled in known manner from the pile a, for example by means of endless rubber bands 0, pass onto a table 0 and beneath the gunnning plate 6, which applies the adhesive to the parts where required. The gumming plate is fitted to a slide 6, which is displaceably' fitted to the rail (1. The rail is secured to the rods f, which are vertically'displaeeable in guides This raising and lowering of the rods f 1s effected by a cam disk 1', against which bears the roller 8 of a double-armed lever s, which is coupled by a rod 9 with a beam h carrying the rods The lowering of the gumming plate I), w rich is effected by means of springs t, can however only take place, when a hookedlever i has been disengaged from a nose It on the beam It. If this lever 11 has not been thus disengaged, it will keep the beam h in raised position, even if the cam disk r should admit of the beam being lowered. The hooked lever 21 which is pivotaliy fitted on the pin 7' is coupled by means of a link m to a curved feeler n, which is journaled on the'underside of the table 0 and when in raised position projects with its free, curved end through a slot u in the table 0. When the feeler is in raised position (Figs. 1, 2), the hook i is beneath the nose It, so that the gumming plate I) cannot be lowered. When, however, a sheet of cardboard passes onto the table 0, it depresses the feeler, whereby the hook i is lifted from the nose 7t", and the gear of the gunnning plate I) is released. The gumming plate can, therefore, be lowered only when there is a sheet of cardboard beneath it on the table 0, and depresses the feeler, thereby disengaging the hook.

For the purpose of facilitating the movement of the feeler n, an arm a is attached to the lever i, on which an adjustable weight '0 is fitted. By displacing this weight the force with which the feeler is raised, may be adjusted at will.

On the slide 6 is provided a pin, w, which is coupled by means of a rod .1: with a lever y. This lever is rocked to and fro by means of a cam disk 2 and a forked rod Z, whereby the gumming plate I) is reciprocated on the rail (1. During such travel the gumming plate comes into contact with the continuonsly revolving roller g, by which it is pro vided with adhesive.

I claim:

1. A device for ap lying adhesive to sheets, comprising a ta le adapted to support a sheet,- a rail above the table, a gumming plate movable on the rail, means for lowering the rail, a feeler extendin above the table, and means controlled by the feeler, for locking the rail-lowering means.

2. A device for up lying adhesive to sheets, comprising a ta le adapted to support a sheet, a rail above the table, a gumming plate carried by the rail, cam-actuated rods engaging the rail, a beam engaged by the rods, a feeler extending above the table, and a hook actuated by said feeler and adapted to engage the beam.

In testimony whereof I have hereunto set my signature in the presence of two sub.- scribing witnesses.

EMIL JAGENBERG. [Ls] Witnesses:

HELEN Norm,

ALBERT Norma. 1 

